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level: Level 2

Questions and Answers List

level questions: Level 2

QuestionAnswer
• Group of metal ion complexes in which a substance provides two or more donor groups to combine with a metal ionChelates (B)
What are the 2 classes of complexes?• Metal ion complexes • Organic molecular complexes
What are the classification of complexes?• Metal ions complexes • Organic Molecular complexes • Inclusion/Occlusion compounds
under Metal Ion Complexes• Inorganic type • Chelates • Olefin type • Aromatic type
under Organic Molecular Complexes• Quinhydrone type • Picric acid type • Caffeine and other drug complexes • Polymer type
under Inclusion/Occlusion Compounds• Channel lattice type • Layer type • Clathrates • Monomolecular type • Macromolecular type
• Metal ion constitutes the central atom and interacts with a base (electron-pair donor, ligand) • This type of interaction leads to the formation of coordination bonds between the speciesMetal Complexes
Metal Ion Complexes in which • The ligand provides only one site for binding with metalInorganic type
• Within a ligand, the atom that is directly bonded to the metal atom/ion is calleddonor atom
it is a covalent bond in which one atom supplies both electronscoordinate covalent bond
• If the coordination complex carries a net charge, the complex is calleda complex ion
• Compounds that contain a coordination complex are calledcoordination compounds
is the number of donor atoms bonded to the central metal atom/ioncoordination number
• Group of metal ion complexes in which a substance provides two or more donor groups to combine with a metal ionChelates (B)
is a molecule called a chelating agent• EDTA
a claw-like substance that can grab and stick to other moleculeschelating agent
What are the Natural Chelating Agents?• Chlorophyll • Haemoglobin • Albumin
• The formation or presence of two or more separate coordinate bonds between a polydentate (multiple bonded) ligand and a single central atomChelation
2 geometric forms of Chelation• Cis isomer • Trans isomer (opposite sides)